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Algebra
Pregunta

A ball is projected upward from the ground. Its di...

A ball is projected upward from the ground. Its distance in feet from the ground in \( t \) seconds is given by \( s ( t ) = - 16 t ^ { 2 } + 128 t \) . At what times will the ball be \( 213 ft \) from the ground? 

Answer

\(2.4 sec \text { and } 5.6 sec\)

Solución
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